Abstract In this commentary I explain how mean differences between normal distributions give rise to different percentages of the populations being above or below a given threshold, depending on where…
Abstract Using data from the ANES 2012 survey, I investigate the relationship between wordsum IQ estimates (unweighted sums, factor analytic and item-response theory scores) and opinions about nuclear energy and…
Nuclear energy often gets bad press. However, journalists are mostly very leftist, scientifically ill-educated women, so perhaps they are not quite the right demographic to tell us about this issue.…
In reply to http://www.ljzigerell.com/?p=534 and his working paper here: http://www.ljzigerell.com/?p=2376 We are discussing his working paper over email, and I had some reservations about his factor analysis. I decided to…
Also posted on the Project Polymath blog. An interesting study has been published: Thomas S. Bateman, and Andrew M. Hess. Different personal propensities among scientists relate to deeper vs. broader…
Abstract The S factor in 21 Italian regions was examined by reanalyzing data published by Lynn (Lynn, 2010) as well as new data compiled from the Italian statistics agency (7…
Abstract A dataset of 25 diverse socioeconomic indicators for US states was compiled and subjected to factor analysis. Results showed that Washington DC was a strong outlier, but if it…
Study PDF. Abstract I analyze the S factor in Chinese province-level units using data obtained from Lynn and Cheng (2013) as well as new data obtained from the Chinese statistical…
I made this: https://emilkirkegaard.shinyapps.io/Understanding_restriction_of_range/ Source: # ui.R shinyUI(fluidPage( titlePanel(title, windowTitle = title), sidebarLayout( sidebarPanel( helpText("Get an intuitive understanding of restriction of range using this interactive…
Paper PDF. Abstract I reanalyze data published by Lynn and Yadav (2015) for Indian states. I find both G and S factors which correlate at .61. Method of correlated vectors…